CN106231987B - Camera device, drive signal method of adjustment and endoscopic system - Google Patents
Camera device, drive signal method of adjustment and endoscopic system Download PDFInfo
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- CN106231987B CN106231987B CN201580021039.4A CN201580021039A CN106231987B CN 106231987 B CN106231987 B CN 106231987B CN 201580021039 A CN201580021039 A CN 201580021039A CN 106231987 B CN106231987 B CN 106231987B
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0655—Control therefor
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00006—Operational features of endoscopes characterised by electronic signal processing of control signals
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00025—Operational features of endoscopes characterised by power management
- A61B1/00036—Means for power saving, e.g. sleeping mode
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00064—Constructional details of the endoscope body
- A61B1/00071—Insertion part of the endoscope body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00112—Connection or coupling means
- A61B1/00114—Electrical cables in or with an endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00112—Connection or coupling means
- A61B1/00121—Connectors, fasteners and adapters, e.g. on the endoscope handle
- A61B1/00124—Connectors, fasteners and adapters, e.g. on the endoscope handle electrical, e.g. electrical plug-and-socket connection
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/045—Control thereof
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/04—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances
- A61B1/05—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor combined with photographic or television appliances characterised by the image sensor, e.g. camera, being in the distal end portion
- A61B1/051—Details of CCD assembly
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0669—Endoscope light sources at proximal end of an endoscope
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/07—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements using light-conductive means, e.g. optical fibres
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
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Abstract
The endoscopic system (1) of the present invention has：Photographing element (25a)；Clock signal generating unit (32), it generates and exports clock signal；Differential conversion portion (33), clock signal is converted to differential wave by it；A pair of differential signal cable (26), it is used to be supplied clock signal as differential wave, and the signal cable (26b) of a side does not carry out impedance matching in end；And adjustment part (37), it sends detection signal to signal cable (26b), according to the time come untill is returned in the end reflection of signal cable (26b) with signal to the detection with after signal from have sent the detection, at least to adjust the characteristic of the clock signal by clock signal generating unit (32) generation.
Description
Technical field
The present invention relates to shooting subject to generate the camera device of image pickup signal, the drive signal by camera device progress
Method of adjustment and endoscopic system.
Background technology
In the past, in medical field, endoscopic system has been used in order to observe the internal organs of the subjects such as patient.Endoscope system
System has：Endoscope (mirror body), it is equipped with photographing element in front end, have it is flexible and elongated in shape, and with being arrived by slotting people
The endoceliac insertion section of subject；And processing unit (processor), it is connected via cable and connector with insertion section, into
The image procossing of the in-vivo image of row photographing element shooting, in-vivo image is shown on the desplay apparatus.For example, from processing unit
Power supply or signal are supplied to the photographing element of insertion section front end.
In recent years, the photographing element for the high pixel number that can carry out clearer image viewing is have studied in endoscope
Using, also, consider that endoscope imported into the difficulty of subject, seek the thin footpath of insertion section.Although in order to realize insertion
The thin footpath in portion is, it is necessary to make the transmission yarn of inside attenuate, but when making transmission yarn attenuate, the resistance of transmission yarn also can
Rise, therefore, the attenuation rate rise of the drive signal such as power supply signal or clock signal.Further, since the length of transmission yarn and
Thickness is different according to the species of endoscope, so the attenuation of drive signal changes also according to endoscope.In the past, although
The value of drive signal is set to the higher all categories enabled to suitable for endoscope, still, in order to prevent due to taking the photograph
The fever that the lower voltage of element or the high speed of signal transmission are brought, seeks closely to adjust driving according to each endoscope
The value of signal.
The voltage detection department for detecting the magnitude of voltage of image pickup part and drive circuit this 2 points is set again it is therefore proposed that having
Put in the insertion section front end of endoscope, be applied to according to the magnitude of voltage detected in power supply by voltage detection department to adjust
The endoscopic system of the voltage of endoscope (for example, referring to patent document 1).
Prior art literature
Patent document
Patent document 1：Japanese Unexamined Patent Publication 2009-106343 publications
The content of the invention
Problems to be solved by the invention
But in the endoscopic system that patent document 1 is recorded, due to needing to set again in the insertion section front end of endoscope
Voltage detection department is put, so the structure of insertion section front end becomes complicated, it is difficult to realize the thin footpath of insertion section.
The present invention be exactly in view of the foregoing and complete, its purpose is to provide it is a kind of can be while keeping endoscope
Thin footpath, while being suitable for the camera device of the value of the drive signal of endoscope, driving letter according to each endoscope adjust automatically
Number method of adjustment and endoscopic system.
Means for solving the problems
In order to solve the above problems and reached purpose, camera device of the invention have：Image pickup part；Drive signal generates
Portion, it generates and exports multiple drive signals for driving the image pickup part；Differential conversion portion, it believes the multiple driving
One in number is converted to differential wave；A pair of of signal wire, it is used for transmission the differential wave, and the signal wire of a side is at end
End does not carry out impedance matching；And adjustment part, its to the party signal wire send detection signal, according to from send the inspection
Survey is started to return to the time come untill in the end reflection of the signal wire of the party with signal to the detection with signal, adjustment
At least one characteristic in the multiple drive signal.
In addition, the camera device of the present invention is characterized in that one in the multiple drive signal is clock signal, institute
State differential conversion portion and the clock signal is converted into the differential wave, the adjustment part changes shaking for the clock signal
Width.
In addition, the camera device of the present invention is characterized in that, one in the multiple drive signal is taken the photograph for described
As the power supply signal in portion, the adjustment part changes the voltage of the power supply signal.
In addition, the drive signal method of adjustment carried out by camera device of the present invention, which has a pair of of signal
Line, which is used to be transmitted using one in multiple drive signals as differential wave, and the signal wire of a side
Impedance matching is not carried out in end, it is characterised in that the drive signal method of adjustment includes：Time of return acquisition step, to institute
The signal wire for stating a side sends detection signal, obtains since being sent the detection signal to the detection signal described one
Side signal wire end reflection and return come untill time i.e. time of return；And set-up procedure, according in the return
The time of return obtained in time acquisition step, adjusts at least one characteristic in the multiple drive signal.
In addition, the endoscopic system of the present invention, it has：The insertion section being inserted into subject；And so as to handling
The processing unit that is connected with the insertion section of mode, it is characterised in that the endoscopic system has：Image pickup part, it is arranged at
The front end of the insertion section；Drive signal generating unit, it generates and exports multiple drive signals for driving the image pickup part；
And differential conversion portion, one in the multiple drive signal is converted to differential wave by it, and a pair of of signal wire, it is used to pass
The defeated differential wave, and the signal wire of a side does not carry out impedance matching in end；And adjustment part, its letter to the party
Number line sends detection signal, according to since being sent the detection signal to the detection signal the party signal
The end reflection of line and return come untill time, adjust at least one characteristic in the multiple drive signal.
Invention effect
According to the present invention, the camera device with a pair of of signal wire sends detection signal to the signal wire of a side, obtains
Returned since being sent the detection with signal in the detection with the end reflection of the signal wire of signal one side come untill
Time, that is, time of return, adjusts at least one in multiple drive signals according to the detection of the acquirement with the time of return of signal
Characteristic, so as to keep endoscope thin footpath while, be suitable for endoscope according to each endoscope adjust automatically
Drive signal value, a pair of signal wire be used for using as the clock signal of one of multiple drive signals as differential wave into
Row supply, and the signal wire of a side does not carry out impedance matching in end.
Brief description of the drawings
Fig. 1 is the schematic diagram of the schematic configuration for the endoscopic system for showing embodiments of the present invention.
Fig. 2 is the block diagram for the structure for schematically showing the endoscopic system shown in Fig. 1.
Fig. 3 is to show the sequential that the detection shown in Fig. 2 is read with the output of pulse signal and pulse signal in signal transmitting and receiving portion
Figure.
Fig. 4 is the flow chart of the processing sequence for the drive signal method of adjustment for showing the endoscopic system shown in Fig. 2.
Fig. 5 is the block diagram of the structure for the endoscopic system for schematically showing the prior art.
Fig. 6 is the flow of another processing sequence of the drive signal method of adjustment for showing the endoscopic system shown in Fig. 2
Figure.
Fig. 7 is the block diagram of another structure of the endoscopic system for schematically showing present embodiment.
Embodiment
In the following description, illustrate endoscopic system, (hereinafter referred to as " implement as the mode for implementing the present invention
Mode ").In addition, the present invention is not limited by the embodiment.It is also, identical to identical part mark in attached drawing record
Label.
(embodiment)
Fig. 1 is the schematic diagram of the schematic configuration for the endoscopic system for showing embodiments of the present invention.Fig. 2 is schematically to show
Go out the block diagram of the structure of the endoscopic system shown in Fig. 1.As depicted in figs. 1 and 2, the endoscopic system 1 of present embodiment has：
Endoscope 2 (mirror body), it is directed in subject, is shot the internal of subject and is generated the picture signal in subject；Place
Manage device 3, its picture signal that is shot as endoscope 2 is carried out as defined in image procossing and control endoscopic system 1 it is each
A portion；Light supply apparatus 4, it generates the illumination light (observation light) of endoscope 2；And display device 5, it shows and by processing unit
The corresponding image of picture signal after 3 real-time image processings.
Endoscope 2 has：Insertion section 21, it is with flexible and elongated in shape；Operation portion 22, its base with insertion section 21
Side connects, and accepts the input of various operation signals；And universal cable 23, it is from operation portion 22 to extending with insertion section 21
The different direction extension in direction, the built-in multiple cables being connected with processing unit 3 or light supply apparatus 4；And connector 24, its
Be arranged at the base end part of universal cable 23, relative to 4 disassembly ease of processing unit 3 and light supply apparatus, between processing unit 3 into
The transmitting-receiving of horizontal electrical signal and the light process for being emitted light supply apparatus 4.The signal cable being built in insertion section 21 and universal cable 23
Line 26a, 26b, 27,28a, 28b form endoscope 2 and the signal in processing unit 3 transmission channel a part.In addition, letter
Number cable 26a, 26b (a pair of of signal wire) in pairs, and form the differential wave cable 26 as coaxial line.
Front end 21a in insertion section 21 is provided with：Photographing element 25a (image pickup part), it docks received light and carries out light
Electricity is changed and generates image pickup signal；And front end substrate 25, it is equipped with resistance 25b.In addition, form what light supply apparatus 4 was emitted
The front end of the light guide cable 29 of the guide path of light, which runs through, is inserted into front end 21a.It is equipped with the light receiving side of photographing element 25a
The optical system of optically focused.Illuminating optical system, the light sent from light supply apparatus 4 are equipped with the front of light guide cable 29
Subject is illuminated from illuminating window 29a.
Photographing element 25a is formed using imaging sensor, the imaging sensor for example with：Sensor portion, it is in 2 that it, which has,
Multiple pixels of rectangular arranging are tieed up, received light is docked and carries out opto-electronic conversion and export electric signal (picture signal)；And mould
Intend front end (AFE), it carries out denoising to the electric signal exported by sensor portion and A/D is changed.Imaging sensor is such as CMOS
(Complementary Metal Oxide Semiconductor；Complementary metal oxide semiconductor) or CCD (Charge
Coupled Device；Charge coupled cell) etc. solid-state imager.The configuration (not shown) of the optical systems such as object lens is in shooting member
The light receiving side of the sensor portion of part 25a.The picture signal (numeral) of photographing element 25a generations is via signal cable 28b or company
Device 24 is connect, is output to processing unit 3.Export a pair of differential signal cable of the differential wave from differential conversion portion 33 described later
The end of the signal cable 26a of a side in line 26 is connected with photographing element 25a.
Export the opposing party's in a pair of differential signal cable 26 of the differential wave from differential conversion portion 33 described later
Signal cable 26b is connected with resistance 25b.In a manner of signal cable 26b does not carry out impedance matching in end, resistance 25b is set
It is set to the resistance value for example more than 1M Ω.
Processing unit 3 has：Image processing part 31, clock signal generating unit 32 (drive signal generating unit), differential conversion
Portion 33, power supply generating unit 34 (drive signal generating unit), control unit 35, detection signal transmitting and receiving portion 36, adjustment part 37, input unit
38 and storage part 39.
Image processing part 31 image pickup signal that is sent from endoscope 2 is implemented as defined in image procossing.Image processing part
31 pairs of picture signals from photographing element 25a outputs, carry out for example changing processing, white balance (WB) adjustment processing, gain tune at the same time
At least one of processing of whole processing, gamma correction processing, edge enhancement processing and format conversion processing etc..Image processing part
31 use FPGA (Field Programmable Gate Array：Field programmable gate array) etc. form.
Clock signal of the generation of clock signal generating unit 32 as one of the drive signal for driving photographing element 25a.
The generation of clock signal generating unit 32 becomes the clock signal of the benchmark of action.The clock signal that clock signal generating unit 32 generates is extremely
Become the benchmark of the action of the photographing element 25a of front end 21a less.
Inputted from clock signal generating unit 32 clock signal is converted to phase and mutually inverted by differential conversion portion 33
Two clock signal, that is, differential waves, by each clock signal be output to differential wave cable 26 each signal cable 26a,
26b.I.e., in the present embodiment, as from clock signal generating unit 32 to the sender of photographing element 25a tranmitting data register signals
Formula, employs using a pair of differential signal cable (differential signal line) 26 to transmit the mode of a signal (differential transmission).It is logical
It is respectively just (+) and to bear (-, phasing back) to cross and set voltage between a pair of differential signal cable respectively, in each line
Being mixed into noise can also eliminate, thus it is stronger than single-ended signal noise immunity, High Speed Transfer can be carried out.Two paired differential letters
The end of a signal cable 26a in number cable 26 is connected with photographing element 25a.It is in addition, another in differential wave cable 26
The end of a piece signal cable 26b is connected with resistance 25b, is not connected to other circuits.In other words, signal cable 26b will not be
End carries out impedance matching, and the signal for being sent to signal cable 26b returns to original place in the end reflection of signal cable 26b.
In addition, in order to make heat not be blocked, processing is carried out so that being sent to the letter of signal cable 26b to the end of signal cable 26b
Number original place is returned to by reflection in the end of signal cable 26b, so be not necessarily required to be connected with resistance 25b, can be complete
State that electricity that is open or not being connected with any circuit floats or only it is connected with front end 21a.
Power supply generating unit 34 generates supply voltage, via connector 24 and universal cable 23, by the supply voltage of the generation
It is supplied to each portion of endoscope 2.In fig. 2, the generation of power supply generating unit 34 is as driving the driving of photographing element 25a to believe
Number one of power supply signal, via signal cable 27, the power supply signal of generation is supplied to photographing element 25a.
Control unit 35 is uniformly controlled the action of the endoscopic system 1 comprising processing unit 3.35 use of control unit is assembled with example
Such as CPU (Central Processing Unit：Central processing unit) etc. FPGA form.Control unit 35 is carried out for processing
The action of transmission of configured information and data of each structure of device 3 etc., thus control endoscopic system 1.Control unit 35 passes through
By each signal cable, each structural portion with processing unit 3, photographing element 25a and light supply apparatus 4 are connected respectively.
Detection sends detection signal with signal cable 26b of the signal transmitting and receiving portion 36 into differential wave cable 26, receives
And read the detection signal for being reflected and being returned in the end of signal cable 26b.Detection receives and dispatches arteries and veins with signal transmitting and receiving portion 36
Rush signal.The end of signal cable 26b is only connected with resistance 25b, so will not be to photographing element even if sending pulse signal
The functional bands of 25a and other elements influence.In addition, as detection signal transmitting and receiving portion 36, without especially setting transmitting-receiving
Special circuit, it is sufficient to judgement by FPGA etc. at edge.
Adjustment part 37 sends detection signal with signal transmitting and receiving portion 36 using detection to signal cable 26b, according to from transmission
The detection is started to return to the time come untill to the end reflection in signal cable 26b with signal, adjusts multiple driving letters
It is at least one in number.Specifically, adjustment part 37 changes the amplitude of the clock signal generated by clock signal generating unit 32.Adjust
The voltage for the power supply signal that whole 37 change is generated by power supply generating unit 34.Adjustment part 37 is for example made of CPU.
Input unit 38 operates equipment to realize using keyboard, mouse and touch panel etc., accepts the various of endoscopic system 1
The input of configured information.Specifically, input unit 38 accepts subject information (such as ID, birthdate, name etc.), interior peeps
The input of the various configured informations such as the identification information (such as ID or the corresponding project of inspection) of mirror 2 and the scope of examination.
The storage of storage part 39 is used for the various programs for acting endoscopic system 1 and the action for including endoscopic system 1
The data of required various parameters etc..Storage part 39 uses RAM (Random Access Memory：Random access memory) and
ROM(Read Only Memory：Read-only storage) etc. form.Storage part 39 can store the figure exported by photographing element 25a
As signal.Storage part 39 can be used to be formed from storage card of exterior installation of processing unit 3 etc..
Light supply apparatus 4 has：Light source control portion 41, light source drive 42 and light source 43.Light source control portion 41 is in control unit
Under 35 control, the outgoing processing of the illumination light of light source 43 is controlled.Light source drive 42 under the control in light source control portion 41, to
Light source 43 supplies defined electric power.The optics such as light source and collector lens light source 43 uses the White LED such as outgoing white light
System is formed.Light source 43 produces the illumination light for being supplied to endoscope 2.From the light that light source 43 is sent by light guide cable 29, via
Connector 24 and universal cable 23, are illuminated subject from the illuminating window 29a of the front end 21a of insertion section 21.In addition,
Illuminating window 29a nearby configures photographing element 25a.
Display device 5 receives the view data generated by processing unit 3, display and the view data pair from processing unit 3
The image answered.Such display device 5 has by liquid crystal or organic EL (Electro Luminescence：Electroluminescent) form
Display panel.
Fig. 3 is output of pulse signal and the pulse signal reading (reception) for showing to be carried out with signal transmitting and receiving portion 36 by detection
Sequence diagram.From in time ta since detection signal transmitting and receiving portion 36 is to signal cable 26b output pulse signals in signal
The end reflection of cable 26b and return to the time of return T of the pulse signal untill coming according to the copper of signal cable 26b in time tb
The spread speed of line, the thickness of copper wire, the temperature value in endoscope 2, signal cable 26b build-out and change.Its
In spread speed, the thickness of copper wire of copper wire of signal cable 26b can be differentiated by the ID of endoscope 2.Endoscope 2 is logical
Often used under certain temperature treatment, so the initial value of the temperature in endoscope 2 can also be set.Therefore, if known
The time of return T of pulse signal, then can obtain the build-out of signal cable 26b.When the cable for knowing signal cable 26b
During length, the attenuation of the clock signal of signal cable 26b can be obtained.Believed by the clock of signal cable 26b transmission
Number attenuation can be considered equal with the attenuation of the clock signal in the signal cable 26a of signal cable 26b equal lengths.Cause
This, when the attenuation for knowing the clock signal in signal cable 26b, can obtain for making clock signal with optimal amplitude
Value reaches photographing element 25a, amplitude to the signal cable 26a clock signals exported.
Therefore, in embodiments, spread speed when the copper wire for reflecting the signal cable 26b in endoscope 2, copper wire
The initial value of thickness, temperature in endoscope 2, and during application time of return T, according to signal cable corresponding with time of return T
The build-out of line, obtains defined arithmetic expression, which can calculate in advance according to the classification of each endoscope 2
The amplitude during output of clock signal corresponding with time of return T.Adjustment part 37 is according in processing unit 3
The ID of sight glass 2, with reference to arithmetic expression corresponding with the classification of the endoscope 2, by the way that time of return T to be applied to the computing in institute's reference
In formula, the amplitude during output of clock signal is obtained.Also, the control of adjustment part 37 is to export to lead to clock signal generating unit 32
The clock signal for the amplitude crossed computing and obtained.Due to understanding that the detection in signal cable 26b is got over the time of return T of signal
Long, then the build-out of signal cable 26b is relatively longer, so in this case, adjustment part 37 relatively increases clock letter
Number amplitude.On the other hand, due to understanding that time of return T is shorter, the build-out of signal cable 26b is relatively shorter, institute
With in this case, adjustment part 37 relatively reduces the amplitude of clock signal.
In addition, on the apparatus structure of endoscope 2, the length of signal cable 26b and other letters for forming universal cable 23
Number cable 26a, 27, the equal length of 28a, 28b.In addition, on other signal cables, also can by the ID of endoscope 2 come
Differentiate spread speed, the thickness of copper wire of the copper wire of each signal cable, additionally it is possible to set the initial of the temperature in endoscope 2
Value.Therefore, when understanding the build-out of signal cable 26b, additionally it is possible to obtain the various drives propagated by other signal cables
The attenuation of dynamic signal.
Specifically, since declining by the power supply signals propagated of the signal cable 28a in drive signal can also be obtained
Decrement, can obtain for make power supply signal with optimal magnitude of voltage reach photographing element 25a, export to signal cable 28a
Power supply signal magnitude of voltage.When the spread speed of copper wire of the signal cable 26b of reflection endoscope 2, the thickness of copper wire, interior peep
The initial value of temperature in mirror 2, and during with reference to time of return T, signal cable 26b corresponding with time of return T can be obtained
Build-out, i.e. signal cable 28a build-out, also by using the length of the signal cable 28a calculated, signal cable
The thickness of the spread speed of the copper wire of line 28a and the copper wire of signal cable 28a, to obtain the electricity propagated by signal cable 28a
The attenuation of source signal, and obtain photographing element 25a, power supply signal for making power supply signal reach with optimal magnitude of voltage
Magnitude of voltage during output.Classification according to each endoscope 2 obtains defined arithmetic expression in advance, which is reflection
These parameters, and when using time of return T, the arithmetic expression of magnitude of voltage when can calculate the output of power supply signal.
Adjustment part 37 is according to the ID of the endoscope 2 in processing unit 3, with reference to arithmetic expression corresponding with the classification of the endoscope 2,
By applying time of return T in the arithmetic expression of institute's reference, the magnitude of voltage during output of power supply signal is obtained.Adjustment part 37 is controlled
It is made as to the output of power supply generating unit 34 by computing the power supply signal of magnitude of voltage that obtains.Due to the inspection in signal cable 26b
The time of return T of survey signal is longer, then the build-out of signal cable 26b is relatively longer, so in this case, adjustment
Portion 37 relatively increases the magnitude of voltage of power supply signal when exporting.On the other hand, since time of return T is shorter, then signal cable
The build-out of 26b is relatively shorter, so in this case, adjustment part 37 relatively reduces the electricity of power supply signal when exporting
Pressure value.
Fig. 4 is the flow chart of the processing sequence for the drive signal method of adjustment for showing endoscopic system 1.As shown in figure 4, inspection
Survey under the control of adjustment part 37, is carried out the detection to signal cable 26b output detection signals and believed with signal transmitting and receiving portion 36
Number output processing (step S1), and read the inspection that the detection signal come is returned in the end reflection of signal cable 26b
Signal readout process (step S2) is used in survey.Adjustment part 37 carries out following detection signal time of return acquirement processing：Utilize inspection
Survey with signal transmitting and receiving portion 36 to signal cable 26b send detection signal, obtain since it have sent the detection signal to
The end reflection of signal cable 26b and return come untill time i.e. detection signal time of return (step S3).
Adjustment part 37 carries out following arithmetic expression with reference to processing：According to the ID of the endoscope 2 in processing unit 3,
With reference to arithmetic expression (step S4) corresponding with the classification of the endoscope 2.Specifically, adjustment part 37 is with reference to for obtaining clock letter
Number output when amplitude the 1st arithmetic expression and for obtain to photographing element 25a export power supply signal when magnitude of voltage
The 2nd arithmetic expression.These arithmetic expressions are maintained in the memory (not shown) that for example endoscope 2 has, and adjustment part 37 is peeped inside
When mirror 2 is installed in processing unit 3, each arithmetic expression is read from the memory of endoscope 2.In addition, these arithmetic expressions
It can be stored in the storage part 39 in processing unit 3.In addition it is also possible to these arithmetic expressions are stored in external number (not shown)
According in storehouse, adjustment part 37 is connected through not shown network line with external data base, with reference to each arithmetic expression.
Adjustment part 37 carries out following drive signal value calculation process：By the way that the detection of acquirement signal time of return is answered
For the arithmetic expression of reference, to calculate the value (step S5) of the drive signal of regulating object.Specifically, adjustment part 37 pass through by
Detection is applied to the 1st arithmetic expression with signal time of return, to calculate the amplitude during output of clock signal.In addition, adjustment part
37 by detection signal time of return by being applied to the 2nd arithmetic expression, to calculate the magnitude of voltage during output of power supply signal.
Adjustment part 37 drive signal generating unit is adjusted so that it is fallen into a trap with calculation process in step s 5
The value calculated carrys out the drive signal value adjustment processing (step S6) of output drive signal.Specifically, adjustment part 37 believes clock
The amplitude for the clock signal that number generating unit 32 exports is changed to the amplitude of the calculation process acquirement by using the 1st arithmetic expression
Value.The magnitude of voltage for the power supply signal that adjustment part 37 exports power supply generating unit 34 is changed to the fortune by using the 2nd arithmetic expression
Calculate the magnitude of voltage that processing obtains.By carrying out the processing of above-mentioned each step S1~step S6, adjustment part 37 is according to each interior
2 adjust automatically of sight glass is suitable for the value of the drive signal for the endoscope 2 installed in processing unit 3.
Fig. 5 is the block diagram of the structure for the endoscopic system for schematically showing the prior art.As shown in figure 5, existing interior
In endoscope system 101, as from the clock signal generating unit 32 of the processing unit 103 controlled from control unit 135 to endoscope 2
The sending method of the photographing element 25a tranmitting data register signals of front end 21a, also uses and has used differential conversion portion 33 and two differences
The differential transmission of dynamic signal cable 26 improves noise resistance.The end of the signal cable 26a of a side in differential wave cable 26
End is connected with photographing element 25a.Since even the photographing element 25a single clocks of front end are also acted, so the opposing party
The end of signal cable 26b is not connected with photographing element 25a.In the example of fig. 5, although signal cable 26b and preceding end group
The resistance 25b connections of plate 25, are not connected with other circuits, although clock signal transmission to front end 21a, but not in height
Used under impedance state.
In the present embodiment, from processing unit 3 it is lateral in the past without using differential wave cable 26 in a side letter
Number cable 26b sends detection signal, reads and returns to the signal that comes in front end reflection, obtains time of return, calculate at least one
The value of a drive signal.Therefore, in the present embodiment, it is used to obtain inspection without resetting in the insertion section of endoscope 2
The signal cable of the time of return of survey signal.In addition, in embodiments, detection is set to be received with signal in 3 side of processing unit
Hair portion 36, due to adjusting the value of drive signal in the adjustment part 37 in processing unit 3, so without in the front end of endoscope 2
Reset detection circuit.I.e., in the present embodiment, the structure of 21 front end of insertion section of endoscope 2 can be maintained
The structure identical with existing structure.Therefore, according to the present embodiment, can be in the thin footpath for the insertion section 21 for keeping endoscope 2
While change, each processing of step S1~step S6 shown in Fig. 4 is carried out as adjustment part 37, thus, it is possible to interior be peeped according to each
Mirror 2 closely adjust automatically be suitable for the endoscope 2 installed in processing unit 3 drive signal value, and can tackle conscientiously
That is generated heat caused by the lower voltage of photographing element 25a or the high speed of signal transmission is prevented.In addition, without setting transmitting-receiving
By the use of special circuit sentenced as detection signal transmitting and receiving portion 36, detection with the time of return of signal by FPGA etc. at edge
It is disconnected, so being changed in 3 side of processing unit without big circuit is especially carried out.
In addition, in the present embodiment, adjustment part 37 mainly in the starting of each endoscopic system 1, is carried out shown in Fig. 4
Step S1~step S6 processing, the electricity thus, it is possible to supply appropriate magnitude of voltage to photographing element 25a since checking
The clock signal of source signal and appropriate amplitude.Certainly, adjustment part 37 can also when the power supply of endoscopic system 1 stops into
Each processing of step S1~step S6 shown in row Fig. 4, can also periodically carry out after inspection starts.In addition, adjustment part 37
Each processing of step S1~step S6 shown in Fig. 4 can be carried out in temperature sensor generation high temperature warning (not shown).
In addition, Fig. 6 is the flow chart of another processing sequence of the drive signal method of adjustment for showing endoscopic system 1.
Step S11~step S13 shown in Fig. 6 is step S1~step S3 shown in Fig. 4.Adjustment part 37 carries out following build-out
Calculation process：According to the initial value of the temperature in the spread speed of the copper wire of signal cable 26b, the thickness of copper wire, endoscope 2 and
Time of return T, calculates the build-out (step S14) of signal cable 26b.Due to the spread speed of the copper wire of signal cable 26b,
The thickness of copper wire can be obtained according to the ID of endoscope 2, so adjustment part 37 is by being applied to time of return T with signal cable
The spread speed of the copper wire of line 26b, the thickness of copper wire, the defined arithmetic expression that the initial value of temperature in endoscope 2 is parameter,
To calculate the build-out of signal cable 26b.Adjustment part 37 is carried out with reference to the computing for being used for the arithmetic expression for obtaining drive signal value
Formula is with reference to processing (step S15).For example, arithmetic expression is stored in the storage part 39 in processing unit 3.Adjustment part 37 is with reference to energy
It is enough by using the build-out of signal cable 26b to calculate the output of clock signal when amplitude arithmetic expression and can count
The arithmetic expression of magnitude of voltage when calculating to photographing element 25a out-put supply signals.Adjustment part 37 carries out following drive signal value fortune
Calculation is handled：By the way that the build-out of signal cable 26b to be applied to the arithmetic expression of institute's reference, to calculate the driving of regulating object letter
Number value (step S16).Step S17 shown in Fig. 6 is the step S6 shown in Fig. 4.In this way, adjustment part 37 can obtain signal
After the build-out of cable 26b, the value of each drive signal is calculated according to calculated build-out.
In addition, Fig. 7 is the block diagram of another structure of the endoscopic system for schematically showing present embodiment.Such as Fig. 7 institutes
The endoscopic system 1A shown is such, can not set clock signal in the connector 24A in processing unit 3A and in endoscope 2A
Signal transmitting and receiving portion 36 and adjustment part 37 are used in generating unit 32, differential conversion portion 33, power supply generating unit 34, detection, are supplied to adjust
To the value of the drive signal of endoscope 2A.
In addition, in the present embodiment, in case of adjustment part 37 adjusts clock signal and power supply signal both sides into
Explanation is gone, still, adjustment part 37 can only change any one in the amplitude of clock signal and the magnitude of voltage of power supply signal
Side.Certainly, adjustment part 37 can according to the build-out of the time of return T or signal cable 26b of the detection signal of acquirement,
In addition to clock signal and power supply signal, it is each also to adjust the control signal of photographing element 25a and the drive signal of actuator etc.
The characteristic of kind drive signal.
In addition, the execution journey of each processing performed for the processing unit 3 by present embodiment and other structures portion
Sequence can in the form of installable or executable form file record in CD-ROM, floppy disk, CD-R, DVD (Digital
Versatile Disk：Digital versatile disc) etc. provided in computer-readable recording medium, can also store
With on the computer of the network connection such as internet, being provided by being downloaded via network.Further, it is also possible to via mutual
The networks such as networking are provided or issued.
Label declaration
1、1A、101：Endoscopic system；2、2A：Endoscope；3、3A、103：Processing unit；4：Light supply apparatus；5：Display dress
Put；21：Insertion section；21a：Front end；22：Operation portion；23：Universal cable；24、24A：Connector；25：Front end substrate；25a：
Photographing element；25b：Resistance；26：Differential wave cable；26a、26b、27、28a、28b：Signal cable；29：Light guide cable；31：
Image processing part；32：Clock signal generating unit；33：Differential conversion portion；34：Power supply generating unit；35、135：Control unit；36：Inspection
Signal transmitting and receiving portion is used in survey；37：Adjustment part；38：Input unit；39：Storage part；41：Light source control portion；42：Light source drive；43：
Light source.
Claims (5)
1. a kind of camera device, it is characterised in that have：
Image pickup part；
Drive signal generating unit, it generates and exports multiple drive signals for driving the image pickup part；
Differential conversion portion, one in the multiple drive signal is converted to differential wave by it；
A pair of of signal wire, it is used for transmission the differential wave, and the signal wire of a side does not carry out impedance matching in end；And
Adjustment part, its to the party signal wire send detection signal, according to since being sent the detection signal to this
Detection returns to the time come untill with signal in the end reflection of the signal wire of the party, adjusts the multiple drive signal
In at least one characteristic.
2. camera device according to claim 1, it is characterised in that
One in the multiple drive signal is clock signal,
The clock signal is converted to the differential wave by the differential conversion portion,
The adjustment part changes the amplitude of the clock signal.
3. camera device according to claim 1, it is characterised in that
One in the multiple drive signal is the power supply signal for being directed to the image pickup part,
The adjustment part changes the voltage of the power supply signal.
4. a kind of drive signal method of adjustment carried out by camera device, which has a pair of of signal wire, a pair of letter
Number line is used to be transmitted using one in multiple drive signals as differential wave, and the signal wire of a side does not carry out in end
Impedance matching, it is characterised in that the drive signal method of adjustment includes：
Time of return acquisition step, detection signal is sent to the signal wire of the party, is obtained from the transmission detection signal
Start to return to the time i.e. time of return come untill in the end reflection of the signal wire of the party with signal to the detection；With
And
Set-up procedure, according to the time of return obtained in the time of return acquisition step, adjusts the multiple driving
At least one characteristic in signal.
5. a kind of endoscopic system, it has：The insertion section being inserted into subject；And so as to handling mode with it is described
The processing unit of insertion section connection, it is characterised in that the endoscopic system has：
Image pickup part, it is arranged at the front end of the insertion section；
Drive signal generating unit, it generates and exports multiple drive signals for driving the image pickup part；And
Differential conversion portion, one in the multiple drive signal is converted to differential wave by it,
A pair of of signal wire, it is used for transmission the differential wave, and the signal wire of a side does not carry out impedance matching in end；And
Adjustment part, its to the party signal wire send detection signal, according to since being sent the detection signal to institute
State detection and return to the time come untill in the end reflection of the signal wire of the party with signal, adjust the multiple driving letter
At least one characteristic in number.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014206393 | 2014-10-07 | ||
| JP2014-206393 | 2014-10-07 | ||
| PCT/JP2015/073300 WO2016056308A1 (en) | 2014-10-07 | 2015-08-20 | Imaging device, drive signal modulation method and endoscope device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106231987A CN106231987A (en) | 2016-12-14 |
| CN106231987B true CN106231987B (en) | 2018-05-08 |
Family
ID=55652932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201580021039.4A Active CN106231987B (en) | 2014-10-07 | 2015-08-20 | Camera device, drive signal method of adjustment and endoscopic system |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US10016116B2 (en) |
| EP (1) | EP3205256A4 (en) |
| JP (1) | JP5981076B1 (en) |
| CN (1) | CN106231987B (en) |
| WO (1) | WO2016056308A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6219004B1 (en) * | 2016-05-24 | 2017-10-25 | オリンパス株式会社 | Endoscope camera control unit |
| WO2017203829A1 (en) * | 2016-05-24 | 2017-11-30 | オリンパス株式会社 | Endoscope camera control unit and endoscope system |
| JP2017225648A (en) * | 2016-06-23 | 2017-12-28 | Hoya株式会社 | Electronic endoscope system |
| JP6765903B2 (en) * | 2016-09-01 | 2020-10-07 | オリンパス株式会社 | Light source device and endoscopic system |
| WO2018116587A1 (en) * | 2016-12-21 | 2018-06-28 | オリンパス株式会社 | Image pickup device and endoscope system |
| CN110169053B (en) * | 2017-07-24 | 2021-04-20 | 奥林巴斯株式会社 | Signal processing system and endoscope |
| CN109786413B (en) * | 2019-02-14 | 2021-03-02 | 豪威半导体（上海）有限责任公司 | Image sensor with a plurality of pixels |
| WO2022013953A1 (en) * | 2020-07-14 | 2022-01-20 | オリンパス株式会社 | Imaging system, endoscope, and control device |
| WO2022064667A1 (en) * | 2020-09-28 | 2022-03-31 | オリンパスメディカルシステムズ株式会社 | Image-capturing device and endoscopic system |
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- 2015-08-20 EP EP15848963.3A patent/EP3205256A4/en not_active Withdrawn
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| US5539333A (en) * | 1995-01-23 | 1996-07-23 | International Business Machines Corporation | CMOS receiver circuit |
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Also Published As
| Publication number | Publication date |
|---|---|
| EP3205256A4 (en) | 2018-07-18 |
| JP5981076B1 (en) | 2016-08-31 |
| US20170071451A1 (en) | 2017-03-16 |
| US10016116B2 (en) | 2018-07-10 |
| EP3205256A1 (en) | 2017-08-16 |
| WO2016056308A1 (en) | 2016-04-14 |
| JPWO2016056308A1 (en) | 2017-04-27 |
| CN106231987A (en) | 2016-12-14 |
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